20154728

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{443}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 42517440

約数和(自身を除く): 22362712

約数列:

[1, 2, 4, 8, 11, 22, 44, 47, 88, 94, 121, 188, 242, 376, 443, 484, 517, 886, 968, 1034, 1772, 2068, 3544, 4136, 4873, 5687, 9746, 11374, 19492, 20821, 22748, 38984, 41642, 45496, 53603, 83284, 107206, 166568, 214412, 229031, 428824, 458062, 916124, 1832248, 2519341, 5038682, 10077364, 20154728]

約数ペア:

[(1, 20154728), (2, 10077364), (4, 5038682), (8, 2519341), (11, 1832248), (22, 916124), (44, 458062), (47, 428824), (88, 229031), (94, 214412), (121, 166568), (188, 107206), (242, 83284), (376, 53603), (443, 45496), (484, 41642), (517, 38984), (886, 22748), (968, 20821), (1034, 19492), (1772, 11374), (2068, 9746), (3544, 5687), (4136, 4873)]